package main

func main() {
	var a int = 123
	var b int = 234
	println(a * b)
	println(a + b)
	println(a / b) // a/0  会出现错误，division by zero
	println(a / b * b)
	println(a % b) // a%0 会出现错误 division by zero
	String()
	Byte()
	Bool()
}
